すじsujiすじsujiスジsuji
1.

A long, thin structure that provides support within an organization or system, such as muscle fibers or sinews in the body.

2.

A consistent thread or rationale in logic or reasoning that ties together ideas, arguments, or narratives.

3.

A hereditary line or lineage that defines the background or potential of an individual, indicating their inherent qualities or capabilities.

4.

A term used to describe a specific area or route that follows the shape or direction of another entity, like a river or road.

5.

A term used in games like Go or Shogi to denote a valid move or sequence that adheres to strategy and logical reasoning.

Example:

きみが言っていることは筋があまりよく通っていない。

きんにく筋肉kinniku
1.

A type of tissue in the body that is responsible for movement through contraction and relaxation, playing a crucial role in the locomotion and functionality of animals.

2.

The flesh surrounding the tendons that enables motion; often associated with strength and physical fitness, particularly when well-defined or toned.

3.

The specific edible meat cuts that consist of gathered sinews from animals like cattle and pigs, valued for their texture and flavor in culinary contexts.

Example:

水泳は筋肉を発達させる。

せすじ背筋sesujiはいきん背筋haikin
1.

The group of muscles located along the spine that contribute to posture and movement of the upper body.

2.

The central vertical line running along the back, associated with the spine and its supporting structures, often referred to when discussing alignment and body mechanics.

3.

The tension or sensation that can be felt in the back during moments of fear or anxiety, reflecting a physiological response to stimuli.

Example:

それを見てうれしくて背筋がぞくぞくした。

くびすじ首筋kubisujiくびすじ頸筋kubisujiくびkubiすじsuji
1.

The area at the back and sides of the neck, often associated with the transition from the head to the spine.

2.

The region of the neck that is typically covered by hair and may be sensitive to touch, often referred to in contexts related to grooming or affection.

3.

The lower posterior part of the neck where it meets the shoulders, often used in phrases indicating restraint or capture.

Example:

彼の首筋を血がすっと伝った。

ひとすじ一筋hitosujiひとhitoすじsujiひとすじ一条hitosuji
1.

A single elongated entity that extends in a continuous manner, often used to describe natural formations like rivers or rays of light.

2.

The state of being singularly focused on a single endeavor or thought, implying an intense dedication or commitment to one specific area or goal.

3.

A term that captures the idea of a unified lineage or family line, suggesting a continuity or connection among members of a family.

Example:

涙が一筋頬を流れた。